





BStone = class("BStone",function()
    -- 继承
    local ret = cc.Node:create() 
    ret.group = nil
    ret.dx = 0
    ret.dy = 0

    ret.func = nil
    return ret
end)

BStone.__index = BStone




function BStone:create(id)
    id = id or 1
    local ret = BStone:new()
    ret:init()
    return ret 
end


function BStone:init()
    self.img = cc.Sprite:create("img/stone_1.png")
    self:addChild( self. img )
end







